If a child has shaking problems what could it be?

I think it's the other way around. Many precocious children are junior-grade highbrows ( as I was) and might know a good deal about basic electronics and such like- but have trouble with such things...

Yes if he is your half or full brother there could be genetic problems. That is why sex with a close relative (not just having a baby) is illegal. You really need to talk to your doctor about this...

The environmental problems are solved by using less vehicles,cutting less trees,by using less plastic made things like polythene,plastic bottles etc.

you could have gas or you could have just ate too much

See an orthopedic doctor or a chiropractor.